Q: Which of the following formulas correctly represents the relationship between bone mass and mechanical stress according to Wolff’s law?

$$\text{Bone Mass} = k \times \text{Mechanical Stress}$$

Question 1

Which of the following best describes the function of the coelom during embryogenesis?

Accepted Answer

It allows for the separation and movement of internal organs, facilitating organ function and development.

Question 2

A patient is diagnosed with a kidney disorder. The physician notes that the kidneys are retroperitoneal. What does this mean regarding their anatomical location?

Accepted Answer

The kidneys are located behind the peritoneal cavity, outside the serous membrane lining.

Question 3

During early embryonic development, cleavage is characterized by which of the following features?

Accepted Answer

Rapid cell division, no increase in overall embryo size, and formation of smaller cells called blastomeres.

Question 4

Which germ layer gives rise to the lining of the digestive tract and respiratory system?

Accepted Answer

Endoderm

Question 5

A tissue sample from the kidney tubules is examined under a microscope. Which epithelial tissue type is most likely observed, and what is its primary function?

Accepted Answer

Simple cuboidal; absorption and secretion

Question 6

Which of the following best explains the difference between microvilli and cilia found on epithelial cells?

Accepted Answer

Microvilli increase surface area for absorption, while cilia move substances across the cell surface.

Question 7

Which of the following is a metabolic function of the integument?

Accepted Answer

Production of vitamin D from cholesterol precursors when exposed to sunlight.

Question 8

A burn patient is found to have damage extending through the epidermis and into the dermis. Which two types of tissues are affected?

Accepted Answer

Epithelial tissue and connective tissue

Question 9

Which connective tissue proper is primarily responsible for long-term and efficient energy storage?

Accepted Answer

Adipose tissue

Question 10

A ligament is composed mainly of dense regular connective tissue. What property does this tissue confer to the ligament?

Accepted Answer

Strength against stretch in a single direction

Question 11

Which of the following formulas correctly represents the relationship between bone mass and mechanical stress according to Wolff’s law?

Accepted Answer

$$	ext{Bone Mass} = k 	imes 	ext{Mechanical Stress}$$

Question 12

During bone healing after a fracture, which sequence of events occurs first?

Accepted Answer

Formation of a hematoma

Question 13

Which bone cell is responsible for breaking down bone matrix and is derived from hematopoietic stem cells?

Accepted Answer

Osteoclast

Question 14

A child’s long bone is growing in length. Which zone of the growth plate is primarily responsible for the proliferation of new cartilage cells?

Accepted Answer

Proliferation zone

Question 15

Which of the following best describes the difference between exocrine and endocrine glands?

Accepted Answer

Exocrine glands secrete products onto body surfaces or into body cavities, while endocrine glands release hormones into the bloodstream.

Question 16

Which of the following is a function of cell adhesion proteins in connective tissue?

Accepted Answer

They bind cells to the extracellular matrix, helping maintain tissue structure.

Question 17

Which type of cartilage is found in the intervertebral discs and is best suited to resist compression?

Accepted Answer

Fibrocartilage

Question 18

Which of the following is true regarding the formation of the gut tube during embryogenesis?

Accepted Answer

It forms as the endoderm folds inward, creating a tube that will become the digestive tract.

Question 19

Which of the following best describes the function of bursae in synovial joints?

Accepted Answer

They reduce friction between moving structures such as tendons and bones.

Question 20

A patient with osteoporosis has an imbalance between osteoblast and osteoclast activity. Which formula best represents the net change in bone mass?

Accepted Answer

$$\Delta 	ext{Bone Mass} = 	ext{Osteoblast Activity} - 	ext{Osteoclast Activity}$$

BIO 259 Exam 2 Study Guide: Embryogenesis, Tissues, Bone, and Joints

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